📚 Reference

This is a complete reference for all parameters, structures, functions, and enums used in Smart Cone Trace.

🧱 Component Parameters

ℹ️ Note: ActorsToIgnore only accepts actors that are already placed in the level.
Learn more about this limitation →

Field	Type	Description
`bDidHit`	`bool`	`true` if anything was hit
`Hits`	`Array<HitResult>`	All valid hits (filtered)
`HitActors`	`Array<Actor>`	All valid hit actors
`ClosestHit`	`HitResult`	Closest valid hit
`VisibleActors`	`Array`	Actors that passed the visibility (line-of-sight) check. Empty if `bCheckVisibility` is false.

Returns: FSmartConeTraceResult
Defined in: SmartConeTraceLib

Parameter	Type	Required	Description
`WorldContextObject`	`Object`	✅	Usually `self`
`Start`	`Vector`	✅	Origin point of the cone
`Direction`	`Vector`	✅	Direction the cone faces
`Length`	`float`	✅	How far the cone extends
`AngleDegrees`	`float`	✅	Half-angle of the cone in degrees
`TraceChannel`	`ETraceTypeQuery`	✅	Object types to trace
`ActorsToIgnore`	`Array<Actor>`	❌	Skip these actors during trace
`RequiredClass`	`Class<Actor>`	❌	Only include actors of this class
`RequiredTags`	`Array<Name>`	❌	Only include actors with these tags
`RequiredInterface`	`Class<Interface>`	❌	Only include actors implementing it
`bMultiHit`	`bool`	❌	Whether to collect all hits
`bIgnoreSelf`	`bool`	❌	Whether to skip tracing the owner
`DebugMode`	`EConeDebugMode`	❌	Visualize trace shapes
`DebugDuration`	`float`	❌	Time to display debug shapes
`StepSize`	`float`	❌	Distance between trace steps
`BoxDepth`	`float`	❌	Depth of each trace box
`ToleranceDegrees`	`float`	❌	Extra angular tolerance
`bCheckVisibility`	`bool`	❌	Enable line-of-sight checks
`VisibilityOriginMode`	`EVisibilityOriginMode`	❌	Start point of visibility traces
`VisibilityBoundsScale`	`float`	❌	Scale of target bounds to trace against

Also in SmartConeTraceLib:

Function	Description
`StartConeTraceTimer(WorldContext, TargetActor, CallbackFunctionName, Interval, bLoop)`	Binds a Blueprint function to be called repeatedly on a timer.
`StopConeTraceTimer(WorldContext, TargetActor)`	Stops the timer for the given actor.

All helper functions work with the FSmartConeTraceResult struct.

Function	Return Type	Description
`GetClosestHitActor(Result)`	`Actor`	Returns the closest hit actor
`GetFirstValidHitActor(Result)`	`Actor`	Returns the first hit actor
`WasActorHit(Result, Actor)`	`bool`	`true` if that actor was hit
`IsValidHit(Result)`	`bool`	`true` if any valid hit exists
`GetHitActorsByClass(Result, Class)`	`Array<Actor>`	Filters hit actors by class
`GetVisibleActors(Result)`	`Array<Actor>`	Returns only actors that passed the visibility check
`IsActorVisible(Result, Actor)`	`bool`	Returns true if the actor is in the VisibleActors list

Used to control debug visualization.

Value	Description
`None`	No visual debug
`Basic`	Hit lines and impact points
`Full`	Full cone shape: lines, boxes, points

Determines the starting point for visibility raycasts.

Value	Description
`ScreenPoints`	Traces from the camera (Center + 4 corners). Best for "Player Vision"
`ScreenCenter`	Traces from the exact center of the screen (Crosshair)
`ConeStart`	Traces from the cone's origin. Best for "AI Vision" or sensors

Looking for real examples? Check out Examples »